Physics
Scientific paper
Aug 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974soph...37..353m&link_type=abstract
Solar Physics, vol. 37, Aug. 1974, p. 353-365.
Physics
58
Magnetohydrodynamic Turbulence, Particle Acceleration, Scattering Coefficients, Solar Corona, Wave Interaction, Anisotropic Media, Doppler Effect, Ion Motion, Magnetohydrodynamic Waves, Refractivity, Whistlers
Scientific paper
The characteristics of particle acceleration by hydromagnetic turbulence are studied under the assumption that the randomizing process is scattering due to resonant wave-particle interactions. A semiquantitative treatment is used for the effects on the distributions of particles and waves of the resonant interaction of either ions or electrons with hydromagnetic waves, or whistlers (in the radiation belts). Kulsrud and Ferrara's (1971) general treatment of acceleration by hydromagnetic turbulence is applied to the particular case where scattering is due to resonant waves, at a scattering rate determined only by the properties of the turbulence and of the resonant waves. It is shown that the effects of acceleration in the solar corona can be described by a diffusion equation in momentum space, which has the same form as the conventional Fermi acceleration due to reflection from moving magnetic inhomogeneities.
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